JP2003248164A - Auto focus adapter - Google Patents

Auto focus adapter

Info

Publication number
JP2003248164A
JP2003248164A JP2002048990A JP2002048990A JP2003248164A JP 2003248164 A JP2003248164 A JP 2003248164A JP 2002048990 A JP2002048990 A JP 2002048990A JP 2002048990 A JP2002048990 A JP 2002048990A JP 2003248164 A JP2003248164 A JP 2003248164A
Authority
JP
Japan
Prior art keywords
focus state
focus
image
image pickup
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2002048990A
Other languages
Japanese (ja)
Other versions
JP3975395B2 (en
Inventor
Kazuo Yoshikawa
和雄 吉川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujinon Corp
Original Assignee
Fuji Photo Optical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Priority to JP2002048990A priority Critical patent/JP3975395B2/en
Priority to US10/358,238 priority patent/US7233358B2/en
Publication of JP2003248164A publication Critical patent/JP2003248164A/en
Application granted granted Critical
Publication of JP3975395B2 publication Critical patent/JP3975395B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals
    • H04N23/673—Focus control based on electronic image sensor signals based on contrast or high frequency components of image signals, e.g. hill climbing method
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Studio Devices (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auto focus adapter capable of simply adding an auto focus function to an existing camera system by simply mounting the auto focus adapter provided with an optical dividing means for dividing an object light transmitting in a shooting lens into an object light for an image and the object light for detecting a focus state, a relay optical system for forming the image of the divided object light for the image on a light receiving face of an image pickup element for the image in a camera main, a focus state detecting image pickup element for receiving the divided object light for detecting the focus state, a focus state detecting means for detecting the focus state based on the image picked up by the focus state detecting image pickup element, and a control means for automatically controlling a focus of the shooting lens based on the obtained focus state between the shooting lens and the camera main. <P>SOLUTION: The auto focus function can be added to the existing camera system without the auto focus function by only mounting the auto focus adapter 16 between the shooting lens 14 and the camera main 12. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明はオートフォーカスア
ダプタに係り、特に撮影レンズのオートフォーカス制御
における合焦検出に適用可能なオートフォーカスアダプ
タに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an autofocus adapter, and more particularly to an autofocus adapter applicable to focus detection in autofocus control of a taking lens.

【０００２】[0002]

【従来の技術】家庭用ビデオカメラなどのオートフォー
カスの方式はコントラスト方式によるものが一般的であ
る。このコントラスト方式は、撮像素子から得られた映
像信号（輝度信号）のうちある範囲（フォーカスエリ
ア）内の映像信号の高域周波数成分を積算して焦点評価
値とし、その焦点評価値が最大となるようにピント調整
を自動で行うものである。これによって、撮像素子で撮
像された画像の鮮鋭度（コントラスト）が最大となる最
良ピント（合焦）が得られる。2. Description of the Related Art The autofocus system for home video cameras and the like is generally based on the contrast system. This contrast method integrates the high frequency components of the video signal within a certain range (focus area) of the video signal (luminance signal) obtained from the image sensor to obtain the focus evaluation value, and the focus evaluation value is the maximum. The focus is automatically adjusted so that As a result, the best focus (focus) at which the sharpness (contrast) of the image captured by the image sensor is maximized is obtained.

【０００３】しかしながら、このコントラスト方式は、
フォーカスレンズを動かしながら最良ピントを探す、い
わゆる山登り方式であるため、合焦に対する反応速度が
遅いという欠点がある。However, this contrast method is
Since this is a so-called hill-climbing method in which the best focus is searched while moving the focus lens, there is a drawback that the reaction speed to focusing is slow.

【０００４】そこで、このようなコントラスト方式の欠
点を解消するために、光路長の異なる複数の撮像素子を
用いて撮影レンズのピント状態（前ピン、後ピン、合
焦）を検出する方法が提案されている（特願２００１−
１６８２４６号、特願２００１−１６８２４７号、特願
２００１−１６８２４８号、特願２００１−１６８２４
９号等）。この検出方法は、映像用の画像を撮像する撮
像素子と共役な位置と、その前後等距離の位置にそれぞ
れピント状態検出用の撮像素子を配設し、各ピント状態
検出用の撮像素子から得られる映像信号から焦点評価値
を求めて、その大小関係を比較することにより、映像用
の撮像素子の受光面におけるピント状態を検出するもの
である。Therefore, in order to eliminate such a drawback of the contrast method, a method of detecting the focus state (front focus, rear focus, focus) of the photographing lens by using a plurality of image pickup elements having different optical path lengths is proposed. (Japanese Patent Application 2001-
168246, Japanese Patent Application No. 2001-168247, Japanese Patent Application No. 2001-168248, Japanese Patent Application No. 2001-16824.
No. 9). In this detection method, the image sensor for detecting focus state is arranged at a position conjugate with the image sensor for capturing an image for video and at positions equidistant to the front and rear of the image sensor, and the image sensor for detecting focus state is obtained. The focus evaluation value is obtained from the received video signal and the magnitude relationship is compared to detect the focus state on the light receiving surface of the image pickup device for video.

【０００５】この検出方法によれば、合焦か否かを判断
できるだけでなく、前ピンか後ピンかも判断できるた
め、合焦に対する反応速度も速いという利点がある。According to this detection method, it is possible not only to determine whether or not the subject is in focus, but also to determine whether it is the front focus or the rear focus.

【０００６】[0006]

【発明が解決しようとする課題】ところで、近年ではハ
イビジョン放送が一般化するにつれてテレビカメラシス
テムで使用される撮影レンズ、カメラの性能が非常に高
くなっている。By the way, in recent years, the performance of photographing lenses and cameras used in television camera systems has become extremely high with the generalization of high-definition broadcasting.

【０００７】一方、実際の番組製作現場では、カメラマ
ンがビューファインダの像を参考に肉眼でピント調整を
行っており、ビューファインダや肉眼での解像力には限
界があるため、最良ピントを探すのが困難になってい
る。撮影時に合焦していると判断した場合であっても、
大型モニターで再生した際にピンボケが発覚することも
少なくない。このような事情から肉眼では困難な正確か
つ確実な合焦検出を行うことができるオートフォーカス
の必要性が高まっている。On the other hand, in an actual program production site, the cameraman adjusts the focus with the naked eye with reference to the image of the viewfinder, and there is a limit to the resolution with the viewfinder and the naked eye, so it is best to find the best focus. It's getting harder. Even if you decide that you are in focus at the time of shooting,
It is not uncommon to find out-of-focus when playing on a large monitor. Under these circumstances, there is an increasing need for autofocus that can perform accurate and reliable focus detection, which is difficult with the naked eye.

【０００８】しかしながら、従来の放送用カメラには、
一般にオートフォーカス機能は内蔵されておらず、ま
た、必ずしも全てのカメラマンがオートフォーカス機能
を使用するとも限らないため、今後、全てのカメラにオ
ートフォーカス機能を搭載することは現実的ではない。
したがって、既に市販されているカメラシステムや、今
後市販されるカメラシステムにおいてオートフォーカス
を使用したくても使用できないというケースがこれまで
以上に増えるものと予想される。However, conventional broadcast cameras have
Generally, the autofocus function is not built in, and not all cameramen necessarily use the autofocus function. Therefore, it is not realistic to install the autofocus function in all cameras in the future.
Therefore, it is expected that the number of cases in which a camera system that is already on the market or a camera system that will be marketed in the future cannot be used even if the user wants to use autofocus more than ever.

【０００９】本発明はこのような事情に鑑みてなされた
もので、既存のカメラシステムに簡単に組み込むことが
でき、簡単にオートフォーカス機能を追加することがで
きるオートフォーカスアダプタを提供することを目的す
る。The present invention has been made in view of such circumstances, and an object thereof is to provide an autofocus adapter which can be easily incorporated into an existing camera system and can be easily added with an autofocus function. To do.

【００１０】[0010]

【課題を解決するための手段】本発明は前記目的を達成
するために、撮影レンズとカメラ本体との間に着脱自在
に装着され、前記撮影レンズのピント状態を検出して、
前記撮影レンズをオートフォーカス制御するオートフォ
ーカスアダプタであって、前記撮影レンズを通過した被
写体光を映像用被写体光とピント状態検出用被写体光と
に分割する光分割手段と、前記光分割手段によって分割
され、所定の第１結像面に結像した映像用被写体光を前
記カメラ本体の映像用撮像素子の受光面（第２受光面）
に結像させるリレー光学系と、前記光分割手段によって
分割されたピント状態検出用被写体光が入射されるピン
ト状態検出用撮像素子と、前記ピント状態検出用撮像素
子で撮像された画像に基づいて前記撮影レンズのピント
状態を検出するピント状態検出手段と、前記ピント状態
検出手段で検出されたピント状態に基づいて前記撮影レ
ンズをオートフォーカス制御する制御手段と、を備えた
ことを特徴とするオートフォーカスアダプタを提供す
る。In order to achieve the above object, the present invention is detachably mounted between a taking lens and a camera body, and detects a focus state of the taking lens,
An autofocus adapter for autofocusing control of the taking lens, comprising: a light splitting means for splitting the subject light passing through the taking lens into a subject light for video and a subject light for focus state detection; The object light for image formed on the predetermined first image formation surface is the light receiving surface (second light receiving surface) of the image pickup device for image of the camera body.
Based on the image captured by the focus state detection image pickup element, a relay optical system for forming an image on, a focus state detection image pickup element on which the focus state detection subject light split by the light splitting means is incident, An auto camera comprising: a focus state detection unit that detects a focus state of the photographing lens; and a control unit that controls the focus of the photographing lens based on the focus state detected by the focus state detection unit. Provide a focus adapter.

【００１１】また、本発明は前記目的を達成するため
に、前記光分割手段の後段位置にアイリスを備えたこと
を特徴とする請求項１に記載のオートフォーカスアダプ
タを提供する。Further, in order to achieve the above object, the present invention provides an autofocus adapter according to claim 1, characterized in that an iris is provided at a rear stage position of the light splitting means.

【００１２】また、本発明は前記目的を達成するため
に、一対のピント状態検出用撮像素子を前記所定の第１
結像面に共役な位置に対して前後等距離の位置に配置
し、前記ピント状態検出手段は、前記一対のピント状態
検出用撮像素子で撮像された画像に基づいて前記撮影レ
ンズのピント状態を検出することを特徴とする請求項１
又は２に記載のオートフォーカスアダプタを提供する。In order to achieve the above-mentioned object, the present invention provides a pair of focus state detecting image pickup devices with the predetermined first image pickup device.
The focus state detection means are arranged at positions equidistant from each other in the front-rear direction with respect to a position conjugate with the image forming plane, and the focus state detection means determines the focus state of the photographing lens based on the images captured by the pair of focus state detection image pickup elements. It detects, It is characterized by the above-mentioned.
Alternatively, the autofocus adapter according to the item 2 is provided.

【００１３】また、本発明は前記目的を達成するため
に、前記光分割手段は、前記撮影レンズを通過した被写
体光から前記ピント状態検出用被写体光を分離して前記
一対のピント状態検出用撮像素子に同じ光量ずつ入射さ
せることを特徴とする請求項１又は２に記載のオートフ
ォーカスアダプタを提供する。In order to achieve the above object, the light splitting means separates the focus state detecting subject light from the subject light that has passed through the taking lens to obtain the pair of focus state detecting images. The autofocus adapter according to claim 1 or 2, wherein the same amount of light is made incident on the element.

【００１４】本発明によれば、既存のオートフォーカス
機能がないカメラシステムであっても、本発明に係るオ
ートフォーカスアダプタを撮影レンズとカメラ本体との
間に装着するだけで、オートフォーカス機能を追加する
ことができる。この際、本発明に係るオートフォーカス
アダプタにはリレー光学系が備えられているので、撮影
レンズとカメラ本体との間に装着しても焦点位置のズレ
を起こすことはなく、非装着時と同じように撮影するこ
とができる。According to the present invention, even in a camera system that does not have an existing autofocus function, the autofocus function according to the present invention can be added only by mounting it between the photographing lens and the camera body. can do. At this time, since the autofocus adapter according to the present invention is provided with the relay optical system, the focus position does not deviate even when mounted between the taking lens and the camera body, and is the same as when not mounted. Can be taken as.

【００１５】[0015]

【発明の実施の形態】以下、添付図面に従って本発明に
係る撮影レンズのオートフォーカスアダプタの好ましい
実施の形態について詳説する。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of an autofocus adapter for a taking lens according to the present invention will be described below in detail with reference to the accompanying drawings.

【００１６】図１（ａ）〜（ｃ）は、本発明に係るオー
トフォーカスアダプタ（以下「ＡＦアダプタ」という）
が組み込まれたテレビカメラシステムの構成図である。1 (a) to 1 (c) show an autofocus adapter according to the present invention (hereinafter referred to as "AF adapter").
It is a block diagram of a television camera system incorporating.

【００１７】同図に示すように、このテレビカメラシス
テム１０は、カメラ本体１２、撮影レンズ１４、ＡＦア
ダプタ１６で構成され、オートフォーカス機能（以下
「ＡＦ機能」という）を提供するＡＦアダプタ１６は、
撮影者が任意に装着できるようにされている。すなわ
ち、ＡＦ機能が不要な場合は、図１（ｂ）に示すよう
に、撮影レンズ１４をカメラ本体１２に直接装着して使
用し、ＡＦ機能が必要な場合にのみ、図１（ｃ）に示す
ように、カメラ本体１２と撮影レンズ１４との間に装着
する。As shown in FIG. 1, the television camera system 10 comprises a camera body 12, a taking lens 14, and an AF adapter 16. The AF adapter 16 that provides an autofocus function (hereinafter referred to as "AF function") is ,
The photographer can wear it arbitrarily. That is, when the AF function is unnecessary, the taking lens 14 is directly attached to the camera body 12 as shown in FIG. 1B, and is used. As shown, it is mounted between the camera body 12 and the taking lens 14.

【００１８】なお、撮影レンズ１４は、その後端部にレ
ンズ側マウント１８が設けられており、このレンズ側マ
ウント１８をカメラ本体１２の先端面に設けられたカメ
ラ側マウント２０に取り付けることにより、カメラ本体
１２に装着される。The taking lens 14 is provided with a lens side mount 18 at the rear end thereof, and the lens side mount 18 is attached to a camera side mount 20 provided on the front end surface of the camera body 12 to provide a camera. It is attached to the main body 12.

【００１９】また、ＡＦアダプタ１６は、その後端部に
レンズ側マウント１８と同一構成の後側マウント２２が
設けられており、この後側マウント２２をカメラ本体１
２のカメラ側マウント２０に取り付けることによりカメ
ラ本体１２に装着できる。同様にＡＦアダプタ１６の先
端部には、カメラ側マウント２０と同一構成の前側マウ
ント２４が設けられており、この前側マウント２４に撮
影レンズ１４のレンズ側マウント１８を取り付けること
により、撮影レンズ１８をＡＦアダプタ１６に装着でき
る。Further, the AF adapter 16 is provided with a rear mount 22 having the same structure as the lens mount 18 at the rear end thereof, and this rear mount 22 is attached to the camera body 1.
It can be attached to the camera body 12 by attaching it to the second camera-side mount 20. Similarly, a front side mount 24 having the same structure as the camera side mount 20 is provided at the front end of the AF adapter 16, and by mounting the lens side mount 18 of the taking lens 14 on this front side mount 24, the taking lens 18 can be mounted. It can be attached to the AF adapter 16.

【００２０】カメラ本体と撮影レンズ１４の間に装着さ
れたＡＦアダプタ１６は、撮影レンズ１４に取り付けら
れたドライブユニット２６にケーブル（不図示）を介し
て電気的に接続される。このドライブユニット２６は、
撮影レンズ１４に設けられたフォーカスレンズ、ズーム
レンズ、アイリス等を駆動するユニットであり、ＡＦア
ダプタ１６は、このドライブユニット２６に制御信号を
与えて被写体にピントが合うようにオートフォーカス制
御（以下「ＡＦ制御」という）を行う。The AF adapter 16 mounted between the camera body and the taking lens 14 is electrically connected to the drive unit 26 attached to the taking lens 14 via a cable (not shown). This drive unit 26
The AF adapter 16 is a unit that drives a focus lens, a zoom lens, an iris, etc. provided in the taking lens 14, and the AF adapter 16 gives a control signal to the drive unit 26 to perform autofocus control (hereinafter referred to as “AF Control)).

【００２１】図２は図１に示したテレビカメラシステム
１０における光学系の構成図である。なお、同図におい
て各レンズの構成は簡略化して示されており、複数のレ
ンズからなるレンズ群を１つのレンズで示したものもあ
る。FIG. 2 is a block diagram of an optical system in the television camera system 10 shown in FIG. It should be noted that the configuration of each lens is shown in a simplified manner in the same figure, and there is also one in which a lens group including a plurality of lenses is shown as one lens.

【００２２】図２に示すように、撮影レンズ１４のレン
ズ鏡筒３０内には、前側からフォーカスレンズ３２、ズ
ームレンズ３４、アイリス３６、リレーレンズ３８等が
配置されている。撮影レンズ１４の先端から入射した被
写体光は、これらの各レンズを通過して、撮影レンズ１
４の後端から出射される。As shown in FIG. 2, in the lens barrel 30 of the taking lens 14, a focus lens 32, a zoom lens 34, an iris 36, a relay lens 38 and the like are arranged from the front side. The subject light incident from the tip of the taking lens 14 passes through each of these lenses, and the taking lens 1
4 is emitted from the rear end.

【００２３】ＡＦアダプタ１６のケース４０内には、撮
影レンズ１４の光軸Ｏ上に、ビームスプリッタ４２、第
１リレーレンズ４４、第２アイリス４６、第２リレーレ
ンズ４８が配置されている。撮影レンズ１４の後端から
出射した被写体光は、後述するようにビームスプリッタ
４２によって２つのピント状態検出用被写体光と１つの
映像用被写体光とに分割される。そして、映像用被写体
光は、撮影レンズ１４の光軸Ｏに沿って進行し、第１リ
レーレンズ４４、第２アイリス４６、第２リレーレンズ
４８を通過して、ＡＦアダプタ１６の後端から出射され
る。一方、２つのピント状態検出用被写体光は、それぞ
れ第１ピント状態検出用撮像素子５０Ａと第２ピント状
態検出用撮像素子５０Ｂとに入射される。In the case 40 of the AF adapter 16, a beam splitter 42, a first relay lens 44, a second iris 46 and a second relay lens 48 are arranged on the optical axis O of the taking lens 14. The subject light emitted from the rear end of the taking lens 14 is split by the beam splitter 42 into two focus state detection subject lights and one image subject light as described later. Then, the subject light for video travels along the optical axis O of the taking lens 14, passes through the first relay lens 44, the second iris 46, and the second relay lens 48, and is emitted from the rear end of the AF adapter 16. To be done. On the other hand, the two object lights for focus state detection enter the first focus state detection image pickup device 50A and the second focus state detection image pickup device 50B, respectively.

【００２４】なお、このＡＦアダプタ１６が装着される
と、ＡＦアダプタ１６に設置された第２アイリス４６が
絞りとして作用し、撮影レンズ１４に設置されたアイリ
ス３６は開放状態となって機能が停止する。第２アイリ
ス４６は、図示しないアイリスモータに駆動されて作動
し、カメラ本体１２から与えられる制御信号又はマニュ
アルによる操作情報に基づいて制御される。When the AF adapter 16 is attached, the second iris 46 installed on the AF adapter 16 acts as a diaphragm, and the iris 36 installed on the taking lens 14 is in an open state and stops functioning. To do. The second iris 46 is driven by an iris motor (not shown) to operate, and is controlled based on a control signal provided from the camera body 12 or manual operation information.

【００２５】カメラ本体１２内には、撮影レンズ１４の
光軸Ｏ上に色分解プリズム５２が配置されており、ＡＦ
アダプタ１６の後端から出射した映像用被写体光は、こ
の色分解プリズム５２によってＲ（赤）、Ｇ（緑）、Ｂ
（青）の各色成分に分解される。そして、各色成分に分
解された被写体光は、それぞれ映像用撮像素子５４Ｒ、
５４Ｇ、５４Ｂの受光面に入射され、この映像用撮像素
子５４Ｒ、５４Ｇ、５４Ｂで電気信号に変換されたの
ち、周知の画像信号処理手段によって信号処理されて所
定形式の映像信号として出力又は記録媒体に記録され
る。In the camera body 12, a color separation prism 52 is arranged on the optical axis O of the taking lens 14, and the AF
The image subject light emitted from the rear end of the adapter 16 is converted into R (red), G (green), and B by the color separation prism 52.
It is decomposed into each color component of (blue). Then, the subject light decomposed into the respective color components is the image pickup device 54R for video,
The light is incident on the light-receiving surfaces of 54G and 54B, converted into electric signals by the image pickup devices 54R, 54G, and 54B for video, and then subjected to signal processing by a well-known image signal processing unit to output or record as a video signal of a predetermined format. Recorded in.

【００２６】図３はＡＦアダプタの内部構造を示すブロ
ック図である。同図に示すように、ビームスプリッタ４
２は３つのプリズム５６、５８、６０で構成されてお
り、前記色分解プリズム５２と同じ形状で形成されてい
る。FIG. 3 is a block diagram showing the internal structure of the AF adapter. As shown in the figure, the beam splitter 4
2 is composed of three prisms 56, 58 and 60, and is formed in the same shape as the color separation prism 52.

【００２７】撮影レンズ１４の後端から出射された被写
体光は、まず、第１プリズム５６に入射され、この第１
プリズム５６のハーフミラー面５６Ａで反射光と透過光
とに分割される。このうち反射光は第１のピント状態検
出用被写体光として第１ピント状態検出用撮像素子５０
Ａに入射され、透過光は第２プリズム５８に入射され
る。The subject light emitted from the rear end of the taking lens 14 first enters the first prism 56, and the first prism 56
The half mirror surface 56A of the prism 56 splits the reflected light into the transmitted light. Of these, the reflected light is the first focus state detection image pickup element 50 as the first focus state detection subject light.
The incident light is incident on A and the transmitted light is incident on the second prism 58.

【００２８】第２プリズム５８に入射した透過光は、そ
の第２プリズム５８のハーフミラー面５８Ａで更に反射
光と透過光とに分割される。このうち反射光は第２のピ
ント状態検出用被写体光として第２ピント状態検出用撮
像素子５０Ｂに入射され、透過光は第３プリズム６０に
入射される。そして、この第３プリズム６０に入射した
透過光が映像用被写体光として第１リレーレンズ４４に
入射される。The transmitted light incident on the second prism 58 is further split into reflected light and transmitted light at the half mirror surface 58A of the second prism 58. Of these, the reflected light is incident on the second focus state detection image pickup device 50B as the second focus state detection subject light, and the transmitted light is incident on the third prism 60. Then, the transmitted light incident on the third prism 60 is incident on the first relay lens 44 as the subject light for video.

【００２９】以上のように、ビームスプリッタ４２は、
撮影レンズ１４を通過した被写体光を２つのピント状態
検出用被写体光と１つの映像用被写体光とに分割する。
この際、ビームスプリッタ４２は、第１ピント状態検出
用撮像素子５０Ａに入射されるピント状態検出用被写体
光と、第２ピント状態検出用撮像素子５０Ｂに入射され
るピント状態検出用被写体光の光量が等しくなるように
被写体光を分割し、また、ピント状態検出用被写体光の
光量よりも映像用被写体光の光量が多くなるように分割
する。ここでは、映像用被写体光とピント状態検出用被
写体光を２対１の割合で分割するものとする。この場
合、第１ピント状態検出用撮像素子５０Ａと第２ピント
状態検出用撮像素子５０Ｂには、それぞれ撮影レンズ１
４を通過した被写体光の全光量の６分の１が入射され、
残り３分の２が映像用被写体光としてカメラ本体１２の
映像用撮像素子５４Ｒ、５４Ｇ、５４Ｂに入射される。As described above, the beam splitter 42 is
The subject light that has passed through the taking lens 14 is split into two focus state detection subject lights and one image subject light.
At this time, the beam splitter 42 emits light of the focus state detection subject light incident on the first focus state detection image sensor 50A and the focus state detection subject light incident on the second focus state detection image sensor 50B. The object light is divided so as to be equal to each other, and the light quantity of the image object light is larger than that of the focus state detection object light. Here, it is assumed that the image subject light and the focus state detection subject light are split at a ratio of 2: 1. In this case, the first focus state detecting image pickup device 50A and the second focus state detecting image pickup device 50B respectively include the taking lens 1
One-sixth of the total amount of subject light that has passed through 4 is incident,
The remaining two thirds are incident on the image pickup devices 54R, 54G, and 54B of the camera body 12 as image subject light.

【００３０】なお、第１ピント状態検出用撮像素子５０
Ａと第２ピント状態検出用撮像素子５０Ｂは、共にカラ
ー映像を撮像するものである必要はなく、本実施の形態
では白黒画像を撮像するＣＣＤであるものとする。The first focus state detecting image pickup device 50
It is not necessary that both A and the second focus state detecting image pickup element 50B pick up a color image, and in the present embodiment, it is assumed that they are CCDs that pick up a monochrome image.

【００３１】ところで、図２に示すように、ビームスプ
リッタ４２を通過した映像用被写体光は、合焦状態にお
いて撮影レンズ１４の後端から所定距離離れた第１結像
面Ｐ１上で一度被写体の像を結ぶ。第１リレーレンズ４
４及び第２リレーレンズ４８からなるリレー光学系は、
この映像用被写体光を集光し、ＡＦアダプタ１６の後端
から同じ距離離れた第２結像面Ｐ2 の受光面上に同じ被
写体像を結ばせる。映像用撮像素子５４Ｇの受光面は、
この第２結像面Ｐ2 上に設置されており、これにより、
映像用撮像素子５４Ｒ、５４Ｇ、５４Ｂの受光面上に第
１結像面Ｐ１上に結像される被写体像と同じ被写体像が
結像される。すなわち、第１結像面Ｐ１と映像用撮像素
子５４Ｒ、５４Ｇ、５４Ｂの受光面（第２結像面Ｐ2 ）
は共役であり、映像用撮像素子５４Ｒ、５４Ｇ、５４Ｂ
の受光面（第２結像面Ｐ2 ）上には、ＡＦアダプタ１６
を装着していても、装着していなくても同じ被写体像が
結像される。By the way, as shown in FIG. 2, the image-forming subject light which has passed through the beam splitter 42 is once focused on the first image forming plane P1 which is a predetermined distance from the rear end of the taking lens 14 in the focused state. Connect the statues. First relay lens 4
The relay optical system including the fourth and second relay lenses 48 is
This image-forming subject light is condensed, and the same subject image is formed on the light receiving surface of the second image forming surface P 2 which is the same distance from the rear end of the AF adapter 16. The light receiving surface of the image pickup device 54G for image is
It is installed on this second image plane P 2 , and
The same subject image as the subject image formed on the first image forming surface P1 is formed on the light receiving surfaces of the image pickup devices 54R, 54G, and 54B. That is, the first imaging plane P1 and the image pickup device 54R, 54G, 54B light-receiving surface of the (second imaging plane P 2)
Is a conjugate, and image pickup devices 54R, 54G, 54B for video
Of the AF adapter 16 on the light receiving surface (second image forming surface P 2 ) of
The same subject image is formed with or without.

【００３２】図４は、第１結像面Ｐ１の被写体光の光軸
と、第１ピント状態検出用撮像素子５０Ａ及び第２ピン
ト状態検出用撮像素子５０Ｂの受光面に入射する被写体
光の光軸を同一直線上に示したものである。FIG. 4 shows the optical axis of the subject light on the first image formation plane P1 and the light of the subject light incident on the light receiving surfaces of the first focus state detection image pickup device 50A and the second focus state detection image pickup device 50B. The axes are shown on the same straight line.

【００３３】同図に示すように、第１ピント状態検出用
撮像素子５０Ａに入射する被写体光の光路長は、第２ピ
ント状態検出用撮像素子５０Ｂに入射する被写体光の光
路長よりも短く設定され、第１結像面に入射する被写体
光の光路長は、その中間の長さとなるように設定されて
いる。すなわち、第１ピント状態検出用撮像素子５０Ａ
と第２ピント状態検出用撮像素子５０Ｂは、それぞれ第
１結像面Ｐ１に対して前後等距離の位置に配置されてい
る。As shown in the figure, the optical path length of the subject light entering the first focus state detecting image pickup device 50A is set shorter than the optical path length of the subject light entering the second focus state detecting image pickup device 50B. The optical path length of the subject light incident on the first image plane is set to an intermediate length. That is, the first focus state detecting image pickup device 50A
The second focus state detecting image pickup element 50B and the second focus state detecting image pickup element 50B are arranged at positions equidistant from each other with respect to the first image forming plane P1.

【００３４】ここで、上述したように第１結像面Ｐ１と
映像用撮像素子５４Ｒ、５４Ｇ、５４Ｂの受光面（第２
結像面Ｐ2 ）は共役であり、共に同じ被写体像が結像さ
れる。したがって、第１ピント状態検出用撮像素子５０
Ａと第２ピント状態検出用撮像素子５０Ｂは、それぞれ
映像用撮像素子５４Ｒ、５４Ｇ、５４Ｂの受光面に対し
て前後等距離の位置で被写体像を撮像することと同じに
なる。Here, as described above, the first image forming surface P1 and the light receiving surfaces of the image pickup devices 54R, 54G and 54B for the image (second
The image plane P 2 ) is conjugate, and the same subject image is formed on both planes. Therefore, the first focus state detection image sensor 50
A and the second focus state detecting image pickup device 50B are the same as capturing a subject image at positions equidistant from the front and rear with respect to the light receiving surfaces of the image pickup devices 54R, 54G, and 54B.

【００３５】第１ピント状態検出用撮像素子５０Ａと第
２ピント状態検出用撮像素子５０Ｂで撮像された画像は
信号処理部６２に出力され、信号処理部６２は、後述す
るように、この第１ピント状態検出用撮像素子５０Ａと
第２ピント状態検出用撮像素子５０Ｂから取得した映像
信号に基づいて撮影レンズ１４のピント状態を検出す
る。そして、その検出結果に基づいてドライブユニット
２６にフォーカスモータの駆動信号を与え、被写体にピ
ントが合うようにＡＦ制御を行う。The images picked up by the first focus state detecting image pickup device 50A and the second focus state detecting image pickup device 50B are output to the signal processing section 62, which will be described later. The focus state of the taking lens 14 is detected based on the video signals acquired from the focus state detection image pickup device 50A and the second focus state detection image pickup device 50B. Then, based on the detection result, a drive signal of the focus motor is given to the drive unit 26, and AF control is performed so that the subject is in focus.

【００３６】図５は、信号処理部６２の構成を示すブロ
ック図である。同図に示すように、第１ピント状態検出
用撮像素子５０Ａと第２ピント状態検出用撮像素子５０
Ｂで撮像された被写体の画像は、それぞれ所定形式のビ
デオ信号として信号処理部６２に出力される。信号処理
部６２は、各ピント状態検出用撮像素子５０Ａ、５０Ｂ
から出力されたビデオ信号をハイパスフィルタ７０Ａ、
７０Ｂ、Ａ／Ｄ変換器７２Ａ、７２Ｂ、ゲート回路７４
Ａ、７４Ｂ、加算器７６Ａ、７６Ｂによって画像の鮮鋭
度（コントラスト）を示す焦点評価値の信号に変換し、
ＣＰＵ８０に入力する。FIG. 5 is a block diagram showing the configuration of the signal processing unit 62. As shown in the figure, the first focus state detection image sensor 50A and the second focus state detection image sensor 50
The image of the subject captured in B is output to the signal processing unit 62 as a video signal of a predetermined format. The signal processing unit 62 includes the focus state detection image pickup devices 50A and 50B.
The video signal output from the high-pass filter 70A,
70B, A / D converters 72A and 72B, gate circuit 74
A, 74B, adders 76A, 76B convert to a signal of focus evaluation value indicating the sharpness (contrast) of the image,
Input to the CPU 80.

【００３７】ここで、焦点評価値を求めるまでの処理を
説明すると、第１ピント状態検出用撮像素子５０Ａと第
２ピント状態検出用撮像素子５０Ｂは、いずれも白黒画
像を撮影するＣＣＤであることから、各ピント状態検出
用撮像素子５０Ａ、５０Ｂから出力されるビデオ信号
は、それぞれの画面を構成する各画素の輝度を示す輝度
信号である。Here, the process up to obtaining the focus evaluation value will be described. Both the first focus state detection image pickup device 50A and the second focus state detection image pickup device 50B are CCDs for picking up a monochrome image. Therefore, the video signal output from each of the focus state detecting image pickup devices 50A and 50B is a luminance signal indicating the luminance of each pixel forming each screen.

【００３８】各ピント状態検出用撮像素子５０Ａ、５０
Ｂから出力されたビデオ信号は、まず、ハイパスフィル
タ７０Ａ、７０Ｂによって高域周波数成分が抽出され、
Ａ／Ｄ変換器７２Ａ、７２Ｂによってデジタル信号に変
換される。そして、このデジタル信号のうち所定のフォ
ーカスエリア内の画素に対応するデジタル信号のみがゲ
ート回路７４Ａ、７４Ｂによって抽出され、抽出された
範囲のデジタル信号の値が加算器７６Ａ、７６Ｂによっ
て加算される。これにより、フォーカスエリア内におけ
るビデオ信号の高域周波数成分の値の総和が求められ、
この総和がフォーカスエリア内における画像の鮮鋭度の
高低を示す焦点評価値となる。Focusing state detecting image pickup devices 50A, 50
In the video signal output from B, high-pass frequency components are first extracted by the high-pass filters 70A and 70B,
It is converted into a digital signal by the A / D converters 72A and 72B. Then, of the digital signals, only the digital signals corresponding to the pixels in the predetermined focus area are extracted by the gate circuits 74A and 74B, and the values of the extracted digital signals are added by the adders 76A and 76B. With this, the sum of the values of the high frequency components of the video signal in the focus area is obtained,
This total becomes a focus evaluation value indicating the level of sharpness of the image in the focus area.

【００３９】なお、同図に示す同期信号発生回路７８か
らは、各ピント状態検出用撮像素子５０Ａ、５０Ｂやゲ
ート回路７４Ａ、７４Ｂ等の各回路に各種同期信号が与
えられており、各回路の処理の同期が図られている。ま
た、同期信号発生回路７８からＣＰＵ８０には、ビデオ
信号の１フィールドごとの垂直同期信号（Ｖ信号）が与
えられている。The synchronizing signal generating circuit 78 shown in the figure gives various synchronizing signals to each circuit such as the focus state detecting image pickup devices 50A and 50B and the gate circuits 74A and 74B. The processing is synchronized. Further, a vertical synchronizing signal (V signal) for each field of the video signal is given from the synchronizing signal generating circuit 78 to the CPU 80.

【００４０】ＣＰＵ８０は、上記のように第１ピント状
態検出用撮像素子５０Ａ及び第２ピント状態検出用撮像
素子５０Ｂから得られた焦点評価値に基づいて、映像用
撮像素子５４Ｒ、５４Ｇ、５４Ｂの受光面に対する撮影
レンズ１４の現在のピント状態を検出する。The CPU 80 of the image pickup devices 54R, 54G, 54B for the image pickups 54R, 54G, 54B based on the focus evaluation values obtained from the first focus state detection image pickup device 50A and the second focus state detection image pickup device 50B as described above. The current focus state of the taking lens 14 with respect to the light receiving surface is detected.

【００４１】次に、第１ピント状態検出用撮像素子５０
Ａ及び第２ピント状態検出用撮像素子５０Ｂから得られ
た焦点評価値に基づくピント状態の検出方法について説
明する。Next, the first focus state detecting image pickup device 50
A focus state detection method based on the focus evaluation value obtained from A and the second focus state detection image pickup device 50B will be described.

【００４２】図６は、横軸に撮影レンズ１４のフォーカ
ス位置、縦軸に焦点評価値をとり、ある被写体を撮影し
た際のフォーカス位置に対する焦点評価値の様子を示し
た図である。図中実線で示す曲線Ｃは映像用撮像素子か
ら得られる焦点評価値をフォーカス位置に対して示した
ものであり、図中点線で示す曲線Ａ、Ｂは、それぞれ第
１ピント状態検出用撮像素子５０Ａと第２ピント状態検
出用撮像素子５０Ｂから得られる焦点評価値をフォーカ
ス位置に対して示したものである。同図において、曲線
Ｃの焦点評価値が最大（極大）となる位置Ｆ３が合焦位
置である。FIG. 6 is a diagram showing the state of the focus evaluation value with respect to the focus position when a certain object is photographed, with the horizontal axis representing the focus position of the taking lens 14 and the vertical axis representing the focus evaluation value. A curve C shown by a solid line in the figure shows a focus evaluation value obtained from the image pickup device for the image with respect to the focus position, and curves A and B shown by a dotted line in the diagram respectively show the first focus state detection image pickup device. 50A and 50B and the focus evaluation value obtained from the second focus state detection image pickup device 50B are shown with respect to the focus position. In the figure, the position F3 where the focus evaluation value of the curve C is maximum (maximum) is the in-focus position.

【００４３】撮影レンズ１４のフォーカス位置がＦ１に
設定された場合、第１ピント状態検出用撮像素子５０Ａ
から得られる焦点評価値ＶA １は曲線Ａの位置Ｆ１に対
応する値となる。一方、第２ピント状態検出用撮像素子
５０Ｂから得られる焦点評価値ＶB １は曲線Ｂの位置Ｆ
１に対応する値となり、この値は第１ピント状態撮像素
子５０Ａから得られる焦点評価値ＶA １よりも小さくな
る。したがって、第１ピント状態検出用撮像素子５０Ａ
から得られる焦点評価値ＶA １の方が第２ピント状態検
出用撮像素子５０Ｂから得られる焦点評価値ＶB １より
も大きい場合は、フォーカス位置が合焦位置よりも至近
側に設定された状態、すなわち、前ピンの状態であるこ
とが分かる。When the focus position of the taking lens 14 is set to F1, the first focus state detecting image pickup device 50A
The focus evaluation value V A 1 obtained from the above is a value corresponding to the position F1 of the curve A. On the other hand, the focus evaluation value V B 1 obtained from the second focus state detection image pickup device 50B is the position F of the curve B.
The value corresponds to 1, which is smaller than the focus evaluation value V A 1 obtained from the first focus state imaging device 50A. Therefore, the first focus state detecting image pickup device 50A
When the focus evaluation value V A 1 obtained from the above is larger than the focus evaluation value V B 1 obtained from the second focus state detection image pickup device 50B, the focus position is set closer to the in-focus position. It can be seen that the state, that is, the state of the front pin.

【００４４】一方、撮影レンズ１４のフォーカス位置が
Ｆ２に設定された場合、第１ピント状態検出用撮像素子
５０Ａから得られる焦点評価値ＶA2は曲線Ａの位置Ｆ２
に対応する値となり、第２ピント状態検出用撮像素子５
０Ｂから得られる焦点評価値ＶB2は曲線Ｂの位置Ｆ２に
対応する値となる。この場合、第１ピント状態検出用撮
像素子５０Ａから得られる焦点評価値ＶA2は、第２ピン
ト状態検出用撮像素子５０Ｂから得られる焦点評価値Ｖ
B2よりも小さくなる。したがって、第１ピント状態検出
用撮像素子５０Ａから得られる焦点評価値ＶA2が第２ピ
ント状態検出用撮像素子５０Ｂから得られる焦点評価値
ＶB2よりも小さい場合は、フォーカス位置が合焦位置よ
りも無限遠側に設定された状態、すなわち、後ピンの状
態であることが分かる。On the other hand, when the focus position of the taking lens 14 is set to F2, the focus evaluation value V A2 obtained from the first focus state detecting image pickup device 50A is the position F2 of the curve A.
Corresponding to the second focus state detection image sensor 5
The focus evaluation value V B2 obtained from 0B is a value corresponding to the position F2 of the curve B. In this case, the focus evaluation value V A2 obtained from the first focus state detection image pickup device 50A is the focus evaluation value V A obtained from the second focus state detection image pickup device 50B.
It is smaller than B2 . Therefore, when the focus evaluation value V A2 obtained from the first focus state detection image pickup device 50A is smaller than the focus evaluation value V B2 obtained from the second focus state detection image pickup device 50B, the focus position is higher than the focus position. It can be seen that is also the state set to the infinity side, that is, the state of the rear pin.

【００４５】これに対して、撮影レンズ１４のフォーカ
ス位置がＦ３、すなわち合焦位置に設定された場合、第
１ピント状態検出用撮像素子５０Ａから得られる焦点評
価値ＶA2は曲線Ａの位置Ｆ３に対応する値となり、第２
ピント状態検出用撮像素子５０Ｂから得られる焦点評価
値ＶB2は曲線Ｂの位置Ｆ３に対応する値となる。この場
合、第１ピント状態検出用撮像素子５０Ａから得られる
焦点評価値ＶA3と第２ピント状態検出用撮像素子５０Ｂ
から得られる焦点評価値ＶB3は互いに等しくなる。した
がって、第１ピント状態検出用撮像素子５０Ａから得ら
れる焦点評価値ＶA3と第２ピント状態検出用撮像素子５
０Ｂから得られる焦点評価値ＶB3とが等しい場合はフォ
ーカス位置が合焦位置（Ｆ３）に設定された状態である
ことが分かる。On the other hand, when the focus position of the taking lens 14 is set to F3, that is, the focus position, the focus evaluation value V A2 obtained from the first focus state detecting image pickup device 50A is the position F3 of the curve A. Becomes the value corresponding to
The focus evaluation value V B2 obtained from the focus state detecting image pickup device 50B becomes a value corresponding to the position F3 of the curve B. In this case, the focus evaluation value V A3 obtained from the first focus state detection image pickup device 50A and the second focus state detection image pickup device 50B
The focus evaluation values V B3 obtained from the above are equal to each other. Therefore, the focus evaluation value V A3 obtained from the first focus state detection image sensor 50A and the second focus state detection image sensor 5
When the focus evaluation value V B3 obtained from 0B is equal, it can be seen that the focus position is set to the in-focus position (F3).

【００４６】このように、第１ピント状態検出用撮像素
子５０Ａと第２ピント状態検出用撮像素子５０Ｂとから
得られる焦点評価値ＶA 、ＶB が分かれば、これに基づ
いて撮影レンズ１４の現在のピント状態が前ピン、後ピ
ン、合焦のいずれであるかを検出することができる。As described above, if the focus evaluation values V A and V B obtained from the first focus state detection image pickup device 50A and the second focus state detection image pickup device 50B are known, the photographic lens 14 of the photographing lens 14 is calculated based on them. It is possible to detect whether the current focus state is front focus, rear focus, or focus.

【００４７】ＣＰＵ８０は、この検出結果と現在のフォ
ーカスレンズ３２の位置情報とに基づいてフォーカスレ
ンズ３２を合焦位置に導くための移動速度又は移動量を
演算し、Ｄ／Ａ変換器８２を介してドライブユニット２
６にフォーカスモータの制御信号を与える。ドライブユ
ニット２６は、この制御信号に基づいてフォーカスモー
タを駆動し、フォーカスレンズ３２を合焦位置に移動さ
せる。The CPU 80 calculates the moving speed or the moving amount for guiding the focus lens 32 to the in-focus position based on the detection result and the current position information of the focus lens 32, and via the D / A converter 82. Drive unit 2
A control signal for the focus motor is given to 6. The drive unit 26 drives the focus motor based on this control signal to move the focus lens 32 to the in-focus position.

【００４８】なお、フォーカスレンズ３２は、フォーカ
スレンズ位置検出器８４によって位置が検出されてお
り、検出された位置情報はドライブユニット２６からＡ
／Ｄ変換器８６を介してＣＰＵ８０に入力される。The position of the focus lens 32 is detected by the focus lens position detector 84, and the detected position information is obtained from the drive unit 26 by A.
It is input to the CPU 80 via the / D converter 86.

【００４９】前記のごとく構成された本実施の形態のテ
レビカメラシステム１０の作用は次のとおりである。The operation of the television camera system 10 of the present embodiment configured as described above is as follows.

【００５０】ＡＦ機能を使用しないで撮影する場合は、
図１（ｂ）に示すように、撮影レンズ１４をカメラ本体
１２に直接装着する。When shooting without using the AF function,
As shown in FIG. 1B, the taking lens 14 is directly attached to the camera body 12.

【００５１】一方、ＡＦ機能を使用して撮影する場合
は、図１（ｃ）に示すように、撮影レンズ１４とカメラ
本体１２との間にＡＦアダプタ１６を装着し、図示しな
いケーブルによってＡＦアダプタ１６とドライブユニッ
ト２６とを接続する。On the other hand, in the case of shooting using the AF function, as shown in FIG. 1C, the AF adapter 16 is mounted between the taking lens 14 and the camera body 12, and the AF adapter is connected by a cable (not shown). 16 and the drive unit 26 are connected.

【００５２】このＡＦアダプタ１６が装着されると、撮
影レンズ１４のアイリス３６は開放状態となって機能が
停止する。そして、ＡＦアダプタ１６に設置された第２
アイリス４６で絞り制御が行われるようになる。When the AF adapter 16 is attached, the iris 36 of the taking lens 14 is opened and its function is stopped. Then, the second installed on the AF adapter 16
Aperture control is performed by the iris 46.

【００５３】また、このＡＦアダプタ１６が装着される
と、内蔵する第１ピント状態検出用撮像素子５０Ａと第
２ピント状態検出用撮像素子５０Ｂによって映像用撮像
素子５４Ｒ、５４Ｇ、５４Ｂの前後位置における被写体
像が撮像され、この第１ピント状態検出用撮像素子５０
Ａと第２ピント状態検出用撮像素子５０Ｂに撮像された
画像データに基づいて信号処理部６２で撮影レンズ１４
のピント状態が検出される。そして、この検出結果に基
づいて撮影レンズ１４がＡＦ制御される。Further, when the AF adapter 16 is attached, the first focus state detecting image pickup device 50A and the second focus state detecting image pickup device 50B are provided at the front and rear positions of the image pickup devices 54R, 54G and 54B. A subject image is captured, and the first focus state detection image sensor 50
Based on the image data captured by A and the second focus state detecting image pickup device 50B, the signal processing unit 62 causes the photographing lens 14
The focus state of is detected. Then, the taking lens 14 is AF-controlled based on the detection result.

【００５４】このように、本実施の形態のテレビカメラ
システム１０によれば、ＡＦアダプタ１６を装着するだ
けで簡単に既存のカメラシステムにＡＦ機能を追加する
ことができる。この際、本実施の形態のＡＦアダプタ１
６にはリレー光学系が備えられているので、装着しても
焦点位置のズレを起こすことはなく、非装着時と同じよ
うに撮影することができる。As described above, according to the television camera system 10 of the present embodiment, the AF function can be easily added to the existing camera system simply by mounting the AF adapter 16. At this time, the AF adapter 1 of the present embodiment
Since 6 is equipped with a relay optical system, even if it is attached, the focal position does not deviate, and it is possible to take an image in the same manner as when not attached.

【００５５】また、本実施の形態のＡＦアダプタ１６に
は、ビームスプリッタ４２の後段位置に第２アイリス４
６が備えられ、ＡＦアダプタ１６が装着されると、この
第２アイリス４６で絞り制御が行われるため、焦点深度
の影響を避けることができる。なお、第２アイリス４６
を設置せず、通常どおりに撮影レンズ１４に設けられた
アイリス３６で絞り制御を行うようにしてもよい。Further, in the AF adapter 16 of the present embodiment, the second iris 4 is provided at the position after the beam splitter 42.
6 is provided and the AF adapter 16 is attached, the aperture control is performed by the second iris 46, so that the influence of the depth of focus can be avoided. The second iris 46
Alternatively, the iris 36 provided on the taking lens 14 may be used as usual to control the aperture.

【００５６】さらに、本実施の形態のＡＦアダプタ１６
では、一対のピント状態検出用撮像素子５０Ａ、５０Ｂ
によって撮像される画像に基づいてピント状態を検出す
るようにしているので、３つのピント状態検出用撮像素
子を用いてピント状態を検出する場合に比べてより多く
の被写体光を映像用被写体光に使うことができる。Furthermore, the AF adapter 16 of the present embodiment
Then, the pair of focus state detection image pickup devices 50A and 50B
Since the focus state is detected based on the image captured by the camera, a larger amount of subject light is used as the image subject light than in the case where the focus state is detected by using three focus state detection image pickup elements. Can be used.

【００５７】なお、本実施の形態では、ビームスプリッ
タ４２を用いて映像用被写体光とピント状態検出用被写
体光を２対１の光量比で分割するようにしているが、光
量の分割比は、これに限定されるものではない。たとえ
ば映像用被写体光とピント状態検出用被写体光を１対２
の光量比で分割し、各ピント状態撮像素子５０Ａ、５０
Ｂに全被写体光の３分の１ずつ受光させるようにしても
よい。In this embodiment, the beam splitter 42 is used to split the image subject light and the focus state detection subject light at a light quantity ratio of 2: 1. It is not limited to this. For example, the subject light for video and the subject light for focus state detection are in a ratio of 1: 2.
The focus state image pickup devices 50A, 50
B may be made to receive one-third of all the subject light.

【００５８】また、本実施の形態では、ビームスプリッ
タ４２が、カメラ本体１２に設置された色分解プリズム
５２と同じ形状で形成されているが、ビームスプリッタ
の形状は、これに限定されるものではなく、たとえば図
７に示すように構成してもよい。このビームスプリッタ
４２´は、３つのプリズム９０、９２、９４で構成さ
れ、撮影レンズ１４の後端から出射された被写体光は、
まず、第１プリズム９０に入射される。そして、この第
１プリズム９０のハーフミラー面９０Ａで反射光と透過
光とに分割される。このうち反射光は第１のピント状態
検出用被写体光として第１ピント状態検出用撮像素子５
０Ａに入射され、透過光は第２プリズム９２に入射され
る。第２プリズム９２に入射した透過光は、その第２プ
リズム９２のハーフミラー面９２Ａで更に反射光と透過
光とに分割される。このうち反射光は第２のピント状態
検出用被写体光として第２ピント状態検出用撮像素子５
０Ｂに入射され、透過光は第３プリズム９４に入射され
る。そして、この第３プリズム９４に入射した透過光が
映像用被写体光として第１リレーレンズ４４に入射され
る。この場合、第２ピント状態検出用撮像素子５０Ｂに
結像する像は、１回反射のため反転してしまうが、信号
処理部６２内で反転処理を行えば問題ない。Further, in the present embodiment, the beam splitter 42 is formed in the same shape as the color separation prism 52 installed in the camera body 12, but the shape of the beam splitter is not limited to this. Instead, it may be configured as shown in FIG. 7, for example. The beam splitter 42 ′ is composed of three prisms 90, 92 and 94, and the subject light emitted from the rear end of the taking lens 14 is
First, it is incident on the first prism 90. The half mirror surface 90A of the first prism 90 splits the reflected light into the transmitted light. Of these, the reflected light is the first focus state detection image sensor 5 as the first focus state detection subject light.
0A, and the transmitted light is incident on the second prism 92. The transmitted light incident on the second prism 92 is further split into reflected light and transmitted light by the half mirror surface 92A of the second prism 92. Of these, the reflected light is the second focus state detection image sensor 5 as the second focus state detection subject light.
0B, and the transmitted light is incident on the third prism 94. Then, the transmitted light that has entered the third prism 94 enters the first relay lens 44 as the subject light for video. In this case, the image formed on the second focus state detection image pickup device 50B is inverted because it is reflected once, but there is no problem if the inversion process is performed in the signal processing unit 62.

【００５９】なお、上記実施の形態では、本発明に係る
ＡＦアダプタ１６をテレビカメラシステムに適用した場
合について説明したが、本発明はカメラ本体と交換可能
な撮影レンズとから構成される全てのタイプのカメラシ
ステムに適用できる。In the above embodiment, the case where the AF adapter 16 according to the present invention is applied to the television camera system has been described, but the present invention is applicable to all types including the camera body and the interchangeable photographing lens. Applicable to any camera system.

【００６０】[0060]

【発明の効果】以上説明したように本発明に係るオート
フォーカスアダプタによれば、既存のオートフォーカス
機能がないカメラシステムであっても、本発明に係るオ
ートフォーカスアダプタを装着するだけで、簡単にオー
トフォーカス機能を提供することができる。この際、本
発明に係るオートフォーカスアダプタにはリレー光学系
が備えられているので、装着しても焦点位置のズレを起
こすことはなく、非装着時と同じように撮影することが
できる。As described above, according to the autofocus adapter according to the present invention, even if the existing camera system does not have the autofocus function, it is possible to simply mount the autofocus adapter according to the present invention. An autofocus function can be provided. At this time, since the autofocus adapter according to the present invention is provided with the relay optical system, even if the autofocus adapter is attached, the focal position does not deviate, and the image can be taken in the same manner as when not attached.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明に係るオートフォーカスアダプタが組み
込まれたテレビカメラシステムの構成図FIG. 1 is a block diagram of a television camera system incorporating an autofocus adapter according to the present invention.

【図２】本実施の形態のテレビカメラシステムにおける
光学系の構成図FIG. 2 is a configuration diagram of an optical system in the television camera system according to the present embodiment.

【図３】ＡＦアダプタの内部構造を示すブロック図FIG. 3 is a block diagram showing the internal structure of an AF adapter.

【図４】第１結像面の被写体光の光軸と第１ピント状態
検出用撮像素子及び第２ピント状態検出用撮像素子の受
光面に入射する被写体光の光軸を同一直線上に示した図FIG. 4 shows the optical axis of the subject light on the first imaging surface and the optical axis of the subject light incident on the light receiving surfaces of the first focus state detection image pickup device and the second focus state detection image pickup device on the same straight line. Figure

【図５】信号処理部の構成を示すブロック図FIG. 5 is a block diagram showing a configuration of a signal processing unit.

【図６】横軸に撮影レンズのフォーカス位置、縦軸に焦
点評価値をとり、ある被写体を撮影した際のフォーカス
位置に対する焦点評価値の様子を示した図FIG. 6 is a diagram showing a state of a focus evaluation value with respect to a focus position when a certain subject is photographed, in which a horizontal axis represents a focus position of a photographing lens and a vertical axis represents a focus evaluation value.

【図７】ビームスプリッタの他の実施の形態の構成を示
す図FIG. 7 is a diagram showing a configuration of another embodiment of the beam splitter.

【符号の説明】[Explanation of symbols]

１０…テレビカメラシステム、１２…カメラ本体、１４
…撮影レンズ、１６…オートフォーカスアダプタ（ＡＦ
アダプタ）、１８…レンズ側マウント、２０…カメラ側
マウント、２２…後側マウント、２４…前側マウント、
２６…ドライブユニット、３０…レンズ鏡筒、３２…フ
ォーカスレンズ、３４…ズームレンズ、３６…アイリ
ス、３８…リレーレンズ、４０…ケース、４２…ビーム
スプリッタ、４４…第１リレーレンズ、４６…第２アイ
リス、４８…第２リレーレンズ、５０Ａ…第１ピント状
態検出用撮像素子、５０Ｂ…第２ピント状態検出用撮像
素子、５２…色分解プリズム、５４Ｒ、５４Ｇ、５４Ｂ
…映像用撮像素子、５６…第１プリズム、５６Ａ…ハー
フミラー面、５８…第２プリズム、５８Ａ…ハーフミラ
ー面、６０…第３プリズム、６２…信号処理部、７０
Ａ、７０Ｂ…ハイパスフィルタ、７２Ａ、７２Ｂ…Ａ／
Ｄ変換器、７４Ａ、７４Ｂ…ゲート回路、７６Ａ、７６
Ｂ…加算器、８０…ＣＰＵ、８２…Ｄ／Ａ変換器、８４
…フォーカスレンズ位置検出器、８６…Ａ／Ｄ変換器、
９０…第１プリズム、９０Ａ…ハーフミラー面、９２…
第２プリズム、９２Ａ…ハーフミラー面、９４…第３プ
リズム、Ｐ１…第１結像面、Ｐ2 …第２結像面10 ... TV camera system, 12 ... Camera body, 14
… Shooting lens, 16… Auto focus adapter (AF
Adapter), 18 ... lens side mount, 20 ... camera side mount, 22 ... rear side mount, 24 ... front side mount,
26 ... Drive unit, 30 ... Lens barrel, 32 ... Focus lens, 34 ... Zoom lens, 36 ... Iris, 38 ... Relay lens, 40 ... Case, 42 ... Beam splitter, 44 ... First relay lens, 46 ... Second iris , 48 ... Second relay lens, 50A ... First focus state detecting image sensor, 50B ... Second focus state detecting image sensor, 52 ... Color separation prism, 54R, 54G, 54B
Image pickup device for image, 56 ... First prism, 56A ... Half mirror surface, 58 ... Second prism, 58A ... Half mirror surface, 60 ... Third prism, 62 ... Signal processing unit, 70
A, 70B ... High-pass filter, 72A, 72B ... A /
D converter, 74A, 74B ... Gate circuit, 76A, 76
B ... Adder, 80 ... CPU, 82 ... D / A converter, 84
... Focus lens position detector, 86 ... A / D converter,
90 ... First prism, 90A ... Half mirror surface, 92 ...
Second prism, 92A ... half mirror surface, 94 ... third prism, P1 ... first imaging surface, P 2 ... second image plane

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2H011 AA03 BA33 BB01 BB02 2H051 AA06 AA08 BA47 BA53 BA55 CA02 CA06 CB02 CB28 CE14 GB06 GB15 2H101 EE01 EE03 EE07 EE14 EE21 EE22 5C022 AB27 AB28 AC42 AC51 AC54 AC78    ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2H011 AA03 BA33 BB01 BB02                 2H051 AA06 AA08 BA47 BA53 BA55                       CA02 CA06 CB02 CB28 CE14                       GB06 GB15                 2H101 EE01 EE03 EE07 EE14 EE21                       EE22                 5C022 AB27 AB28 AC42 AC51 AC54                       AC78

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 撮影レンズとカメラ本体との間に着脱自
在に装着され、前記撮影レンズのピント状態を検出し
て、前記撮影レンズをオートフォーカス制御するオート
フォーカスアダプタであって、 前記撮影レンズを通過した被写体光を映像用被写体光と
ピント状態検出用被写体光とに分割する光分割手段と、 前記光分割手段によって分割され、所定の第１結像面に
結像した映像用被写体光を前記カメラ本体の映像用撮像
素子の受光面（第２受光面）に結像させるリレー光学系
と、 前記光分割手段によって分割されたピント状態検出用被
写体光が入射されるピント状態検出用撮像素子と、 前記ピント状態検出用撮像素子で撮像された画像に基づ
いて前記撮影レンズのピント状態を検出するピント状態
検出手段と、 前記ピント状態検出手段で検出されたピント状態に基づ
いて前記撮影レンズをオートフォーカス制御する制御手
段と、を備えたことを特徴とするオートフォーカスアダ
プタ。1. An autofocus adapter, which is detachably mounted between a taking lens and a camera body, detects an in-focus state of the taking lens, and controls the autofocus of the taking lens. Light splitting means for splitting the passed subject light into image subject light and focus state detecting subject light, and the image subject light split by the light splitting means and imaged on a predetermined first image forming surface. A relay optical system for forming an image on the light receiving surface (second light receiving surface) of the image pickup device of the camera body, and a focus state detection image pickup device on which the focus state detection subject light split by the light splitting unit is incident. A focus state detecting unit that detects a focus state of the photographing lens based on an image captured by the focus state detecting image sensor; and a focus state detecting unit that detects the focus state. Autofocus adapter, characterized in that and a control means for autofocus control the photographing lens on the basis of the focus state. 【請求項２】 前記光分割手段の後段位置にアイリスを
備えたことを特徴とする請求項１に記載のオートフォー
カスアダプタ。2. The autofocus adapter according to claim 1, further comprising an iris at a position subsequent to the light splitting means. 【請求項３】 一対のピント状態検出用撮像素子を前記
所定の第１結像面に共役な位置に対して前後等距離の位
置に配置し、前記ピント状態検出手段は、前記一対のピ
ント状態検出用撮像素子で撮像された画像に基づいて前
記撮影レンズのピント状態を検出することを特徴とする
請求項１又は２に記載のオートフォーカスアダプタ。3. A pair of focus state detecting image pickup devices are arranged at positions equidistant from one another in the front-rear direction with respect to a position conjugate with the predetermined first image plane, and the focus state detecting means is arranged to detect the pair of focus states. The autofocus adapter according to claim 1, wherein the focus state of the taking lens is detected based on an image picked up by a detection image pickup element. 【請求項４】 前記光分割手段は、前記撮影レンズを通
過した被写体光から前記ピント状態検出用被写体光を分
離して前記一対のピント状態検出用撮像素子に同じ光量
ずつ入射させることを特徴とする請求項１又は２に記載
のオートフォーカスアダプタ。4. The light splitting means separates the focus state detection subject light from the subject light that has passed through the photographing lens and makes the same amount of light incident on the pair of focus state detection image pickup devices. The autofocus adapter according to claim 1 or 2.
JP2002048990A 2002-02-26 2002-02-26 Camera system Expired - Fee Related JP3975395B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002048990A JP3975395B2 (en) 2002-02-26 2002-02-26 Camera system
US10/358,238 US7233358B2 (en) 2002-02-26 2003-02-05 Autofocus adaptor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002048990A JP3975395B2 (en) 2002-02-26 2002-02-26 Camera system

Publications (2)

Publication Number Publication Date
JP2003248164A true JP2003248164A (en) 2003-09-05
JP3975395B2 JP3975395B2 (en) 2007-09-12

Family

ID=27750770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002048990A Expired - Fee Related JP3975395B2 (en) 2002-02-26 2002-02-26 Camera system

Country Status (2)

Country Link
US (1) US7233358B2 (en)
JP (1) JP3975395B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005033763A1 (en) * 2003-09-10 2005-04-14 Sharp Kabushiki Kaisha Imaging lens position control device
JP2006195342A (en) * 2005-01-17 2006-07-27 Fujinon Corp Autofocus area operation apparatus
CN100414339C (en) * 2003-09-10 2008-08-27 夏普株式会社 Imaging lens position control device
US7782385B2 (en) 2004-11-19 2010-08-24 Fujinon Corporation AF-area display apparatus and AF-area operation apparatus
US7848630B2 (en) 2006-03-30 2010-12-07 Fujinon Corporation Autofocus adapter
JP2018005021A (en) * 2016-07-05 2018-01-11 武蔵オプティカルシステム株式会社 Autofocus module and video camera
WO2020095366A1 (en) * 2018-11-06 2020-05-14 オリンパス株式会社 Imaging device, endoscope device, and method for operating imaging device
WO2020095365A1 (en) * 2018-11-06 2020-05-14 オリンパス株式会社 Imaging device, endoscopic device, and operating method for imaging device

Families Citing this family (175)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4118916B2 (en) 2003-11-11 2008-07-16 オリンパス株式会社 Multispectral imaging device
US7430009B2 (en) * 2003-11-14 2008-09-30 Matsushita Electric Industrial Co., Ltd. Image pickup device including an infrared-ray cut filter
JP4576852B2 (en) * 2004-03-04 2010-11-10 富士フイルム株式会社 Focus status detection device
KR101483314B1 (en) * 2006-08-30 2015-01-15 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Extended life abrasive article and method
US8390733B2 (en) * 2007-02-15 2013-03-05 Panasonic Corporation Imaging device with interchangeable lens and camera body for imaging device
US8125560B1 (en) * 2007-08-13 2012-02-28 Ambarella, Inc. System for topology based automatic focus
JP5070036B2 (en) * 2007-12-26 2012-11-07 日本放送協会 Adapter for image rotation
EP2075631A1 (en) * 2007-12-26 2009-07-01 Fujinon Corporation Image rotating adapter and camera having the same
US9509313B2 (en) 2009-04-14 2016-11-29 Monolithic 3D Inc. 3D semiconductor device
US8669778B1 (en) 2009-04-14 2014-03-11 Monolithic 3D Inc. Method for design and manufacturing of a 3D semiconductor device
US8058137B1 (en) 2009-04-14 2011-11-15 Monolithic 3D Inc. Method for fabrication of a semiconductor device and structure
US8362482B2 (en) 2009-04-14 2013-01-29 Monolithic 3D Inc. Semiconductor device and structure
US9577642B2 (en) 2009-04-14 2017-02-21 Monolithic 3D Inc. Method to form a 3D semiconductor device
US7964916B2 (en) * 2009-04-14 2011-06-21 Monolithic 3D Inc. Method for fabrication of a semiconductor device and structure
US8395191B2 (en) 2009-10-12 2013-03-12 Monolithic 3D Inc. Semiconductor device and structure
US10354995B2 (en) 2009-10-12 2019-07-16 Monolithic 3D Inc. Semiconductor memory device and structure
US11984445B2 (en) 2009-10-12 2024-05-14 Monolithic 3D Inc. 3D semiconductor devices and structures with metal layers
US10910364B2 (en) 2009-10-12 2021-02-02 Monolitaic 3D Inc. 3D semiconductor device
US10366970B2 (en) 2009-10-12 2019-07-30 Monolithic 3D Inc. 3D semiconductor device and structure
US10043781B2 (en) 2009-10-12 2018-08-07 Monolithic 3D Inc. 3D semiconductor device and structure
US11374118B2 (en) 2009-10-12 2022-06-28 Monolithic 3D Inc. Method to form a 3D integrated circuit
US10388863B2 (en) 2009-10-12 2019-08-20 Monolithic 3D Inc. 3D memory device and structure
US10157909B2 (en) 2009-10-12 2018-12-18 Monolithic 3D Inc. 3D semiconductor device and structure
US11018133B2 (en) 2009-10-12 2021-05-25 Monolithic 3D Inc. 3D integrated circuit
US9099424B1 (en) 2012-08-10 2015-08-04 Monolithic 3D Inc. Semiconductor system, device and structure with heat removal
US9099526B2 (en) 2010-02-16 2015-08-04 Monolithic 3D Inc. Integrated circuit device and structure
US8026521B1 (en) 2010-10-11 2011-09-27 Monolithic 3D Inc. Semiconductor device and structure
US10217667B2 (en) 2011-06-28 2019-02-26 Monolithic 3D Inc. 3D semiconductor device, fabrication method and system
US9953925B2 (en) 2011-06-28 2018-04-24 Monolithic 3D Inc. Semiconductor system and device
US9219005B2 (en) 2011-06-28 2015-12-22 Monolithic 3D Inc. Semiconductor system and device
US8163581B1 (en) 2010-10-13 2012-04-24 Monolith IC 3D Semiconductor and optoelectronic devices
US11482440B2 (en) 2010-12-16 2022-10-25 Monolithic 3D Inc. 3D semiconductor device and structure with a built-in test circuit for repairing faulty circuits
US10497713B2 (en) 2010-11-18 2019-12-03 Monolithic 3D Inc. 3D semiconductor memory device and structure
US8273610B2 (en) 2010-11-18 2012-09-25 Monolithic 3D Inc. Method of constructing a semiconductor device and structure
US11018191B1 (en) 2010-10-11 2021-05-25 Monolithic 3D Inc. 3D semiconductor device and structure
US11158674B2 (en) 2010-10-11 2021-10-26 Monolithic 3D Inc. Method to produce a 3D semiconductor device and structure
US11600667B1 (en) 2010-10-11 2023-03-07 Monolithic 3D Inc. Method to produce 3D semiconductor devices and structures with memory
US11227897B2 (en) 2010-10-11 2022-01-18 Monolithic 3D Inc. Method for producing a 3D semiconductor memory device and structure
US11024673B1 (en) 2010-10-11 2021-06-01 Monolithic 3D Inc. 3D semiconductor device and structure
US11315980B1 (en) 2010-10-11 2022-04-26 Monolithic 3D Inc. 3D semiconductor device and structure with transistors
US11469271B2 (en) 2010-10-11 2022-10-11 Monolithic 3D Inc. Method to produce 3D semiconductor devices and structures with memory
US11257867B1 (en) 2010-10-11 2022-02-22 Monolithic 3D Inc. 3D semiconductor device and structure with oxide bonds
US10290682B2 (en) 2010-10-11 2019-05-14 Monolithic 3D Inc. 3D IC semiconductor device and structure with stacked memory
US10896931B1 (en) 2010-10-11 2021-01-19 Monolithic 3D Inc. 3D semiconductor device and structure
US10833108B2 (en) 2010-10-13 2020-11-10 Monolithic 3D Inc. 3D microdisplay device and structure
US11869915B2 (en) 2010-10-13 2024-01-09 Monolithic 3D Inc. Multilevel semiconductor device and structure with image sensors and wafer bonding
US11164898B2 (en) 2010-10-13 2021-11-02 Monolithic 3D Inc. Multilevel semiconductor device and structure
US11063071B1 (en) 2010-10-13 2021-07-13 Monolithic 3D Inc. Multilevel semiconductor device and structure with waveguides
US11605663B2 (en) 2010-10-13 2023-03-14 Monolithic 3D Inc. Multilevel semiconductor device and structure with image sensors and wafer bonding
US11694922B2 (en) 2010-10-13 2023-07-04 Monolithic 3D Inc. Multilevel semiconductor device and structure with oxide bonding
US11929372B2 (en) 2010-10-13 2024-03-12 Monolithic 3D Inc. Multilevel semiconductor device and structure with image sensors and wafer bonding
US11133344B2 (en) 2010-10-13 2021-09-28 Monolithic 3D Inc. Multilevel semiconductor device and structure with image sensors
US11043523B1 (en) 2010-10-13 2021-06-22 Monolithic 3D Inc. Multilevel semiconductor device and structure with image sensors
US11855100B2 (en) 2010-10-13 2023-12-26 Monolithic 3D Inc. Multilevel semiconductor device and structure with oxide bonding
US11984438B2 (en) 2010-10-13 2024-05-14 Monolithic 3D Inc. Multilevel semiconductor device and structure with oxide bonding
US10998374B1 (en) 2010-10-13 2021-05-04 Monolithic 3D Inc. Multilevel semiconductor device and structure
US11163112B2 (en) 2010-10-13 2021-11-02 Monolithic 3D Inc. Multilevel semiconductor device and structure with electromagnetic modulators
US11437368B2 (en) 2010-10-13 2022-09-06 Monolithic 3D Inc. Multilevel semiconductor device and structure with oxide bonding
US11327227B2 (en) 2010-10-13 2022-05-10 Monolithic 3D Inc. Multilevel semiconductor device and structure with electromagnetic modulators
US10978501B1 (en) 2010-10-13 2021-04-13 Monolithic 3D Inc. Multilevel semiconductor device and structure with waveguides
US9197804B1 (en) * 2011-10-14 2015-11-24 Monolithic 3D Inc. Semiconductor and optoelectronic devices
US11855114B2 (en) 2010-10-13 2023-12-26 Monolithic 3D Inc. Multilevel semiconductor device and structure with image sensors and wafer bonding
US11404466B2 (en) 2010-10-13 2022-08-02 Monolithic 3D Inc. Multilevel semiconductor device and structure with image sensors
US10679977B2 (en) 2010-10-13 2020-06-09 Monolithic 3D Inc. 3D microdisplay device and structure
US10943934B2 (en) 2010-10-13 2021-03-09 Monolithic 3D Inc. Multilevel semiconductor device and structure
US11615977B2 (en) 2010-11-18 2023-03-28 Monolithic 3D Inc. 3D semiconductor memory device and structure
US11610802B2 (en) 2010-11-18 2023-03-21 Monolithic 3D Inc. Method for producing a 3D semiconductor device and structure with single crystal transistors and metal gate electrodes
US11018042B1 (en) 2010-11-18 2021-05-25 Monolithic 3D Inc. 3D semiconductor memory device and structure
US11355381B2 (en) 2010-11-18 2022-06-07 Monolithic 3D Inc. 3D semiconductor memory device and structure
US11355380B2 (en) 2010-11-18 2022-06-07 Monolithic 3D Inc. Methods for producing 3D semiconductor memory device and structure utilizing alignment marks
US11004719B1 (en) 2010-11-18 2021-05-11 Monolithic 3D Inc. Methods for producing a 3D semiconductor memory device and structure
US11854857B1 (en) 2010-11-18 2023-12-26 Monolithic 3D Inc. Methods for producing a 3D semiconductor device and structure with memory cells and multiple metal layers
US11804396B2 (en) 2010-11-18 2023-10-31 Monolithic 3D Inc. Methods for producing a 3D semiconductor device and structure with memory cells and multiple metal layers
US11482439B2 (en) 2010-11-18 2022-10-25 Monolithic 3D Inc. Methods for producing a 3D semiconductor memory device comprising charge trap junction-less transistors
US11521888B2 (en) 2010-11-18 2022-12-06 Monolithic 3D Inc. 3D semiconductor device and structure with high-k metal gate transistors
US11923230B1 (en) 2010-11-18 2024-03-05 Monolithic 3D Inc. 3D semiconductor device and structure with bonding
US11508605B2 (en) 2010-11-18 2022-11-22 Monolithic 3D Inc. 3D semiconductor memory device and structure
US11735462B2 (en) 2010-11-18 2023-08-22 Monolithic 3D Inc. 3D semiconductor device and structure with single-crystal layers
US11901210B2 (en) 2010-11-18 2024-02-13 Monolithic 3D Inc. 3D semiconductor device and structure with memory
US11031275B2 (en) 2010-11-18 2021-06-08 Monolithic 3D Inc. 3D semiconductor device and structure with memory
US11107721B2 (en) 2010-11-18 2021-08-31 Monolithic 3D Inc. 3D semiconductor device and structure with NAND logic
US11164770B1 (en) 2010-11-18 2021-11-02 Monolithic 3D Inc. Method for producing a 3D semiconductor memory device and structure
US11495484B2 (en) 2010-11-18 2022-11-08 Monolithic 3D Inc. 3D semiconductor devices and structures with at least two single-crystal layers
US11862503B2 (en) 2010-11-18 2024-01-02 Monolithic 3D Inc. Method for producing a 3D semiconductor device and structure with memory cells and multiple metal layers
US11121021B2 (en) 2010-11-18 2021-09-14 Monolithic 3D Inc. 3D semiconductor device and structure
US11443971B2 (en) 2010-11-18 2022-09-13 Monolithic 3D Inc. 3D semiconductor device and structure with memory
US11211279B2 (en) 2010-11-18 2021-12-28 Monolithic 3D Inc. Method for processing a 3D integrated circuit and structure
US11094576B1 (en) 2010-11-18 2021-08-17 Monolithic 3D Inc. Methods for producing a 3D semiconductor memory device and structure
US11569117B2 (en) 2010-11-18 2023-01-31 Monolithic 3D Inc. 3D semiconductor device and structure with single-crystal layers
US11784082B2 (en) 2010-11-18 2023-10-10 Monolithic 3D Inc. 3D semiconductor device and structure with bonding
US11482438B2 (en) 2010-11-18 2022-10-25 Monolithic 3D Inc. Methods for producing a 3D semiconductor memory device and structure
JP2012137600A (en) * 2010-12-27 2012-07-19 Sony Corp Imaging system, imaging device, and program
US10388568B2 (en) 2011-06-28 2019-08-20 Monolithic 3D Inc. 3D semiconductor device and system
KR20130005882A (en) * 2011-07-07 2013-01-16 삼성전자주식회사 Digital photographing apparatus, method for the same, and method for auto-focusing
US8687399B2 (en) 2011-10-02 2014-04-01 Monolithic 3D Inc. Semiconductor device and structure
US11088050B2 (en) 2012-04-09 2021-08-10 Monolithic 3D Inc. 3D semiconductor device with isolation layers
US11616004B1 (en) 2012-04-09 2023-03-28 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers and a connective path
US11410912B2 (en) 2012-04-09 2022-08-09 Monolithic 3D Inc. 3D semiconductor device with vias and isolation layers
US11735501B1 (en) 2012-04-09 2023-08-22 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers and a connective path
US11694944B1 (en) 2012-04-09 2023-07-04 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers and a connective path
US11476181B1 (en) 2012-04-09 2022-10-18 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers
US11881443B2 (en) 2012-04-09 2024-01-23 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers and a connective path
US8557632B1 (en) 2012-04-09 2013-10-15 Monolithic 3D Inc. Method for fabrication of a semiconductor device and structure
US10600888B2 (en) 2012-04-09 2020-03-24 Monolithic 3D Inc. 3D semiconductor device
US11594473B2 (en) 2012-04-09 2023-02-28 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers and a connective path
US11164811B2 (en) 2012-04-09 2021-11-02 Monolithic 3D Inc. 3D semiconductor device with isolation layers and oxide-to-oxide bonding
US11961827B1 (en) 2012-12-22 2024-04-16 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers
US8674470B1 (en) 2012-12-22 2014-03-18 Monolithic 3D Inc. Semiconductor device and structure
US11063024B1 (en) 2012-12-22 2021-07-13 Monlithic 3D Inc. Method to form a 3D semiconductor device and structure
US11967583B2 (en) 2012-12-22 2024-04-23 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers
US11916045B2 (en) 2012-12-22 2024-02-27 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers
US11309292B2 (en) 2012-12-22 2022-04-19 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers
US11217565B2 (en) 2012-12-22 2022-01-04 Monolithic 3D Inc. Method to form a 3D semiconductor device and structure
US11018116B2 (en) 2012-12-22 2021-05-25 Monolithic 3D Inc. Method to form a 3D semiconductor device and structure
US11784169B2 (en) 2012-12-22 2023-10-10 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers
US10651054B2 (en) 2012-12-29 2020-05-12 Monolithic 3D Inc. 3D semiconductor device and structure
US11087995B1 (en) 2012-12-29 2021-08-10 Monolithic 3D Inc. 3D semiconductor device and structure
US11430668B2 (en) 2012-12-29 2022-08-30 Monolithic 3D Inc. 3D semiconductor device and structure with bonding
US9871034B1 (en) 2012-12-29 2018-01-16 Monolithic 3D Inc. Semiconductor device and structure
US10892169B2 (en) 2012-12-29 2021-01-12 Monolithic 3D Inc. 3D semiconductor device and structure
US10600657B2 (en) 2012-12-29 2020-03-24 Monolithic 3D Inc 3D semiconductor device and structure
US10903089B1 (en) 2012-12-29 2021-01-26 Monolithic 3D Inc. 3D semiconductor device and structure
US11004694B1 (en) 2012-12-29 2021-05-11 Monolithic 3D Inc. 3D semiconductor device and structure
US10115663B2 (en) 2012-12-29 2018-10-30 Monolithic 3D Inc. 3D semiconductor device and structure
US11430667B2 (en) 2012-12-29 2022-08-30 Monolithic 3D Inc. 3D semiconductor device and structure with bonding
US11177140B2 (en) 2012-12-29 2021-11-16 Monolithic 3D Inc. 3D semiconductor device and structure
US9385058B1 (en) 2012-12-29 2016-07-05 Monolithic 3D Inc. Semiconductor device and structure
US10325651B2 (en) 2013-03-11 2019-06-18 Monolithic 3D Inc. 3D semiconductor device with stacked memory
US11935949B1 (en) 2013-03-11 2024-03-19 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers and memory cells
US8902663B1 (en) 2013-03-11 2014-12-02 Monolithic 3D Inc. Method of maintaining a memory state
US11869965B2 (en) 2013-03-11 2024-01-09 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers and memory cells
US11923374B2 (en) 2013-03-12 2024-03-05 Monolithic 3D Inc. 3D semiconductor device and structure with metal layers
US11398569B2 (en) 2013-03-12 2022-07-26 Monolithic 3D Inc. 3D semiconductor device and structure
US8994404B1 (en) 2013-03-12 2015-03-31 Monolithic 3D Inc. Semiconductor device and structure
US11088130B2 (en) 2014-01-28 2021-08-10 Monolithic 3D Inc. 3D semiconductor device and structure
US10840239B2 (en) 2014-08-26 2020-11-17 Monolithic 3D Inc. 3D semiconductor device and structure
US9117749B1 (en) 2013-03-15 2015-08-25 Monolithic 3D Inc. Semiconductor device and structure
US10224279B2 (en) 2013-03-15 2019-03-05 Monolithic 3D Inc. Semiconductor device and structure
US11574109B1 (en) 2013-04-15 2023-02-07 Monolithic 3D Inc Automation methods for 3D integrated circuits and devices
US11341309B1 (en) 2013-04-15 2022-05-24 Monolithic 3D Inc. Automation for monolithic 3D devices
US11487928B2 (en) 2013-04-15 2022-11-01 Monolithic 3D Inc. Automation for monolithic 3D devices
US11720736B2 (en) 2013-04-15 2023-08-08 Monolithic 3D Inc. Automation methods for 3D integrated circuits and devices
US11030371B2 (en) 2013-04-15 2021-06-08 Monolithic 3D Inc. Automation for monolithic 3D devices
US11270055B1 (en) 2013-04-15 2022-03-08 Monolithic 3D Inc. Automation for monolithic 3D devices
US9021414B1 (en) 2013-04-15 2015-04-28 Monolithic 3D Inc. Automation for monolithic 3D devices
CN103513384B (en) * 2013-07-09 2015-08-05 北京大学 A kind of method improving photon detection efficiency
US10297586B2 (en) 2015-03-09 2019-05-21 Monolithic 3D Inc. Methods for processing a 3D semiconductor device
US11107808B1 (en) 2014-01-28 2021-08-31 Monolithic 3D Inc. 3D semiconductor device and structure
US11031394B1 (en) 2014-01-28 2021-06-08 Monolithic 3D Inc. 3D semiconductor device and structure
US11011507B1 (en) 2015-04-19 2021-05-18 Monolithic 3D Inc. 3D semiconductor device and structure
US10825779B2 (en) 2015-04-19 2020-11-03 Monolithic 3D Inc. 3D semiconductor device and structure
US10381328B2 (en) 2015-04-19 2019-08-13 Monolithic 3D Inc. Semiconductor device and structure
US11056468B1 (en) 2015-04-19 2021-07-06 Monolithic 3D Inc. 3D semiconductor device and structure
US11956952B2 (en) 2015-08-23 2024-04-09 Monolithic 3D Inc. Semiconductor memory device and structure
US11978731B2 (en) 2015-09-21 2024-05-07 Monolithic 3D Inc. Method to produce a multi-level semiconductor memory device and structure
DE112016004265T5 (en) 2015-09-21 2018-06-07 Monolithic 3D Inc. 3D SEMICONDUCTOR DEVICE AND STRUCTURE
US10522225B1 (en) 2015-10-02 2019-12-31 Monolithic 3D Inc. Semiconductor device with non-volatile memory
US10418369B2 (en) 2015-10-24 2019-09-17 Monolithic 3D Inc. Multi-level semiconductor memory device and structure
US11991884B1 (en) 2015-10-24 2024-05-21 Monolithic 3D Inc. 3D semiconductor device and structure with logic and memory
US11296115B1 (en) 2015-10-24 2022-04-05 Monolithic 3D Inc. 3D semiconductor device and structure
US10847540B2 (en) 2015-10-24 2020-11-24 Monolithic 3D Inc. 3D semiconductor memory device and structure
US11114464B2 (en) 2015-10-24 2021-09-07 Monolithic 3D Inc. 3D semiconductor device and structure
US11937422B2 (en) 2015-11-07 2024-03-19 Monolithic 3D Inc. Semiconductor memory device and structure
US11114427B2 (en) 2015-11-07 2021-09-07 Monolithic 3D Inc. 3D semiconductor processor and memory device and structure
US11251149B2 (en) 2016-10-10 2022-02-15 Monolithic 3D Inc. 3D memory device and structure
US11930648B1 (en) 2016-10-10 2024-03-12 Monolithic 3D Inc. 3D memory devices and structures with metal layers
US11711928B2 (en) 2016-10-10 2023-07-25 Monolithic 3D Inc. 3D memory devices and structures with control circuits
US11329059B1 (en) 2016-10-10 2022-05-10 Monolithic 3D Inc. 3D memory devices and structures with thinned single crystal substrates
US11869591B2 (en) 2016-10-10 2024-01-09 Monolithic 3D Inc. 3D memory devices and structures with control circuits
US11812620B2 (en) 2016-10-10 2023-11-07 Monolithic 3D Inc. 3D DRAM memory devices and structures with control circuits
US11296106B2 (en) 2019-04-08 2022-04-05 Monolithic 3D Inc. 3D memory semiconductor devices and structures
US11018156B2 (en) 2019-04-08 2021-05-25 Monolithic 3D Inc. 3D memory semiconductor devices and structures
US11763864B2 (en) 2019-04-08 2023-09-19 Monolithic 3D Inc. 3D memory semiconductor devices and structures with bit-line pillars
US11158652B1 (en) 2019-04-08 2021-10-26 Monolithic 3D Inc. 3D memory semiconductor devices and structures
US10892016B1 (en) 2019-04-08 2021-01-12 Monolithic 3D Inc. 3D memory semiconductor devices and structures

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50113228A (en) 1974-02-14 1975-09-05
JPS5576312A (en) 1978-12-04 1980-06-09 Canon Inc Focus detecting system of image
JPS59221081A (en) 1983-05-28 1984-12-12 Sony Corp Video camera
JPH0619488B2 (en) 1984-04-19 1994-03-16 株式会社ニコン Automatic focus adjustment adapter for interchangeable lenses −
JPS6230224A (en) 1985-08-01 1987-02-09 Seiko Instr & Electronics Ltd Smectic liquid crystal device
JP2591049B2 (en) 1988-03-30 1997-03-19 株式会社ニコン Camera system
DE4418903C2 (en) * 1993-06-15 1996-08-01 Deutsche Forsch Luft Raumfahrt Arrangement for dividing a large format image strip of an opto-electronic line or area camera
JPH0772378A (en) 1993-09-02 1995-03-17 Nikon Corp Focusing device
JP3453433B2 (en) 1994-08-05 2003-10-06 キヤノン株式会社 Color separation optical system and imaging apparatus using the same
JPH0949965A (en) 1995-08-08 1997-02-18 Nikon Corp Focal position detector
JP2002296493A (en) * 2001-03-30 2002-10-09 Fuji Photo Optical Co Ltd Focus state detector
JP2002296492A (en) * 2001-03-30 2002-10-09 Fuji Photo Optical Co Ltd Adapter for detecting focus state of photographing lens
JP2002365517A (en) * 2001-06-04 2002-12-18 Fuji Photo Optical Co Ltd Device for detecting state of focusing of photographic lens
JP2002372661A (en) * 2001-06-15 2002-12-26 Fuji Photo Optical Co Ltd Photographic lens

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005033763A1 (en) * 2003-09-10 2005-04-14 Sharp Kabushiki Kaisha Imaging lens position control device
CN100414339C (en) * 2003-09-10 2008-08-27 夏普株式会社 Imaging lens position control device
US7782385B2 (en) 2004-11-19 2010-08-24 Fujinon Corporation AF-area display apparatus and AF-area operation apparatus
JP2006195342A (en) * 2005-01-17 2006-07-27 Fujinon Corp Autofocus area operation apparatus
US7848630B2 (en) 2006-03-30 2010-12-07 Fujinon Corporation Autofocus adapter
JP2018005021A (en) * 2016-07-05 2018-01-11 武蔵オプティカルシステム株式会社 Autofocus module and video camera
WO2020095366A1 (en) * 2018-11-06 2020-05-14 オリンパス株式会社 Imaging device, endoscope device, and method for operating imaging device
WO2020095365A1 (en) * 2018-11-06 2020-05-14 オリンパス株式会社 Imaging device, endoscopic device, and operating method for imaging device
JPWO2020095366A1 (en) * 2018-11-06 2021-11-04 オリンパス株式会社 How to operate the image pickup device, endoscope device and image pickup device
JPWO2020095365A1 (en) * 2018-11-06 2021-11-11 オリンパス株式会社 How to operate the image pickup device, endoscope device and image pickup device
JP7065202B2 (en) 2018-11-06 2022-05-11 オリンパス株式会社 How to operate the image pickup device, endoscope device and image pickup device
JP7065203B2 (en) 2018-11-06 2022-05-11 オリンパス株式会社 How to operate the image pickup device, endoscope device and image pickup device

Also Published As

Publication number Publication date
JP3975395B2 (en) 2007-09-12
US20030160888A1 (en) 2003-08-28
US7233358B2 (en) 2007-06-19

Similar Documents

Publication Publication Date Title
JP3975395B2 (en) Camera system
JP3992992B2 (en) Subject image acquisition device
JP5653035B2 (en) Imaging apparatus, focus detection method, and control method
JP2002287017A (en) Focusing state detecting device for photographic lens
JP5089154B2 (en) Auto focus system
WO2002099498A1 (en) Device for determining focused state of taking lens
JP2002296492A (en) Adapter for detecting focus state of photographing lens
US7262805B2 (en) Focus detecting system
JP2002365518A (en) Device for detecting focusing state of photographic lens
JP2002372661A (en) Photographic lens
JP2003270517A (en) Focus state detector
JP2003279846A (en) Focus state detector for photographing lens
JP2020181147A (en) Focusing apparatus, image pickup apparatus, focusing method, and program
JP4032877B2 (en) Auto focus system
JP2004038114A (en) Auto-focus camera
JPH09274130A (en) Lens barrel and camera
JP2009109792A (en) Autofocusing device and camera using it
JP2003322791A (en) Focus adjusting device, imaging device, and optical equipment
JP2006215285A (en) Autofocus system
JP2003287673A (en) Focusing state detecting device for photographic lens
JP2004151608A (en) Autofocus system
JP2004212458A (en) Autofocus system
JP2003279842A (en) Focus state detector for photographing lens
JP2003279847A (en) Focus state detector for photographing lens
JP2009031562A (en) Light receiving element, light receiver, focus detecting device, camera

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20041130

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060901

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060906

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20061012

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070213

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070412

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070524

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070606

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100629

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100629

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110629

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110629

Year of fee payment: 4

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110629

Year of fee payment: 4

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110629

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120629

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120629

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130629

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees